LinkedIN share button not working

I have a problem that LinkedIn share button suddenly stopped working. (It used to work).
It loads a popup with all content and images without problems and it loads LinkedIn users if I want share it with specific person without problem.

But the problem is that share button on the popup doesn’t do anything when it is clicked.

On the Firebug consule it is writen

`<WSResponse>

<responseInfo>FORM_INVALID</responseInfo>
<responseMsg></responseMsg>
<jsonPayLoad></jsonPayLoad>

<formErrors>
{ globalError : ”,
inlineErrors: {

‘messageSubject-shareForm’ : ‘The text you provided is too long (the maximum length is 150 characters, your text contains 152 characters).’
}
}
</formErrors>
</WSResponse> `

http://wordpress.org/plugins/only-tweet-like-share-and-google-1/